Switching between two weapons

Hi guys i am currently using two scripts to choose my weapon before I spawn my player into the game and use two models.(knife and gun)But when i choose my gun, my (knife model) spawns too.Same the other way too.I have no idea why this happens.Here's my script.

 using UnityEngine;
 using System.Collections;
 using System.Collections.Generic;
 
 public class WeaponManager : MonoBehaviour {
     public List<Gun> Weapons = new List<Gun>();
     public int CurWeapon;
     public static WeaponManager Instance;
     // Use this for initialization
     void Start () {
         Instance = this;
     
     }
     
     // Update is called once per frame
     void Update () {
         CurWeapon = GUIManager.Instance.CurWeapon;
 
     }
 
     public void Spawn()
     {
         CurWeapon = GUIManager.Instance.CurWeapon;
         transform.root.GetComponent<Character> ().Server_GetGun (Weapons [CurWeapon].Name);
         ApplyWeapon();
 
 
     }
 
     public void ApplyWeapon()
     {
         foreach (Gun gu in Weapons)
         {
             if(gu == Weapons[CurWeapon])
             {
                 gu.gameObject.SetActive(true);
             }
             else
             {
                 gu.gameObject.SetActive(false);
             }
         }
     }
 
     public static Gun FindWeapon(string Name)
     {
         foreach (Gun Gu in Instance.Weapons)
         {
             if(Name == Gu.Name)
                 return Gu;
         }
         return null;
     }
 }

The other one:(near Client_GetGun)

     [RPC]
     public void Client_GetGun(string name)
     {
         foreach (ThirdPersonGuns tpg in Guns) 
         {
             if(tpg.Name == name)
             {
                 tpg.Obj.SetActive(true);
                 Debug.Log (tpg + "Done");
             }
             else
             {
                 tpg.Obj.SetActive (false);
                 Debug.Log (tpg + "Not Done");
         }
     }
 }
 
 [System.Serializable]
 public class ThirdPersonGuns
 {
     public string Name;
     public GameObject Obj;
 }
 }